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SORN
by OldSkrote - 31/07/25 02:07 PM
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Forums34
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Aug 24th, 2023
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Joined: Aug 2009
Posts: 155
L - Learner Plates On
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L - Learner Plates On
Joined: Aug 2009
Posts: 155 |
I think the lower section of the airbox could be unique to Morgan, Richard.
The top section is certainly Ford, but the lower section seems to have been specifically designed to fit the available space and shape on the Roadster.
Then the Morgan boffins, rather than devise a more complex (and probably more efficient) inlet tract, just took a hacksaw to the base of it.
Sid
Ex 2014 3.7 Roadster in Ferrari Le Mans Blue
Ex Indigo Blue '99 +4
Ex MogMMX Innovations winner
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Talk Morgan Guru
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Talk Morgan Guru
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Interesting thought Sid. I initially thought MMC wouldn't have the volume to justify a dedicated airbox moulding but then realised they do have one for the intake manifold complete with Morgan logo. It still doesn't make sense for them to have a custom made airbox then take a hacksaw to it though. As well as the two Mustang airbox variants there were other cars fitted with the same Cyclone engine, Mazda, Lincoln, Ford Edge, F-150 and Transit even a Ginetta .... I wonder 
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Just barreling along Talk Morgan Guru
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OP
Just barreling along Talk Morgan Guru
Joined: Nov 2015
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Umm, been to Ginetta a few years ago & they make quite a lot of custom parts in house, they even have their own Carbon Fibre shop
Might be worth a call Richard ?
Jon M
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Joined: Oct 2017
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Just Getting Started
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Just Getting Started
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Jon where did you get the plastic scoop from that you have put under the cowl I,have experimented with a made up scoop on my 2014 plus 4. The existing air duct just being strewn under the cowl ,with the scoop on it seemed to make a difference in acceleration,and low down power,so would be good to get a purpose made scoop
duncan series 1 climax, TR +4, plus 4 GDI
SSL F&R suspension
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Joined: Nov 2015
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Just barreling along Talk Morgan Guru
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OP
Just barreling along Talk Morgan Guru
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Series1, try Car Builder Solutions & Demon Tweeks, sometimes you also have to modify by cutting flanges off or warming with a hot air gun and deforming to fit
Jon M
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Joined: Feb 2016
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Talk Morgan Guru
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Talk Morgan Guru
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Inspired by Jon's much earlier posts relating to getting more cooler air into the 3.7 Roadster's air box, I've also cut a 4" hole in the box but then used a ducting elbow that came from Screwfix to help draw cool air from the side vents in the bonnet. A quick spray of matt black and I think it looks quite tidy. ![[Linked Image]](https://www.tm-img.com/images/2019/06/19/P1070208.md.jpg) I've left the original hole in the base of the box open, but I'm hoping that this - very cheap! - addition may improve things. Only a proper dyno test will confirm one way or the other whether there's any difference in performance, as I must say I can't notice any, but I just feel that anything's got to be better than the standard arrangement. Borrowed your idea sid. First person I showed it to suggested an angle on the rectangular inlet to better align with louvres. ![[Linked Image]](https://i.imgur.com/1KcAANc.jpg) Next plan is to somehow block off original air inlet route to reap full advantage of cool air.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Member of the Inner Circle
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On the S1 there is a rubber boot seal to try to get a better seal to the louvres. You can also see it is quite wide thought then the flow is through a smaller rectangular section. ![[Linked Image]](https://www.tm-img.com/images/2017/08/22/20170822_130233.jpg)
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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Talk Morgan Guru
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Talk Morgan Guru
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Saw those at MOG2019 concours John. Certainly a better solution than present for Cyclone engine.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Talk Morgan Guru
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Talk Morgan Guru
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Looks good, Richard, perhaps you can put an extension at the current input which leads to the lateral hood like in John‘s Series1. Such an extension you could shape yourself to have a nicely huger area at the new input point. This way you make a benefit out of the need to have to overcome the distance. The shape of the output of some type of exponential bass bins comes to my mind as an orientation, but now with the function of an input and of course in a much smaller scale. I think an almost conical shape like in this example below should work if you only consider the last and biggest section of the horn below. ![[Linked Image]](https://www.tm-img.com/images/2019/09/15/03D0F8FA-1681-4653-A660-66110BF821F5.jpg)
'14 4/4 graphite grey
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Member of the Inner Circle
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You might need a bonnet bulge to fit that in!  The S1 box if you look closely gets very narrow and even has a circular indent for the hot water hose to go underneath. So for me it starts off well but then is a compromise of the head space below the bonnet.
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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